Games like mathematical number divination and mind reading.

There are several ways to play the pure number game, but the algorithm requirements are the same: think (write) the number-generally 10~99, not 1~ 100. To do an addition and subtraction problem according to the rules is to add the two numbers you want to get a sum, subtract the number you want to get a difference, and then press this difference. For example, if you think of a number 25,2+5 = 7,25-7 = 18, use this number to get18, and then find the corresponding small picture on the drawing board with many different patterns, and remember it yourself. These are all done in your heart or in private. The other person can easily recognize what image is in your mind without knowing your information at all. Play it publicly on TV and even show the pattern with mysterious crystal balls. The result is of course that you are surprised from ear to ear, and the audience is equally surprised. The so-called surprise is heaven and man. Its principle is actually very simple, saying that it is worthless. It also shows how easily people are fooled in unfamiliar areas.

It's really good for everyone to be happy as entertainment. But in the final analysis, it is still an idiot game. Many seemingly magical and inexplicable things are actually not magical, but ordinary people usually don't care.